Ok.. I do have an actual fix for the KP sleep issue and also the one related to the GPU panics on the new MacBook Pro 16". And this is not a bs routine troubleshooting process that Apple Support put me through. I went through a week and a half of trial and error and (after ordering a new MacBook Pro 16 to replace this one which I planned to send back, I stumbled across this stupidly simple solution.)
These first few steps are optional:
1. SMC Reset
2. PRAM Reset
Both are unlikely to fix anything.
3. (The actual fix.). Boot into "Internet Recovery Mode" and reinstall the latest version of MacOS (10.15.4 at this time) right over top the existing install. Don't wipe your drive or repartition it, it's entirely unnecessary. Just run the install from Internet Recovery and it should stop the KPs from happening.
My guess is some plist configs or possibly some kexts were not properly updated through the course of the last few differential patches. And a full reinstall replaces those with fresh functional files from the full OS build.
This was not my first step and it was one I was reluctant to do. However I found mention of one person who'd stumbled across the same solution and after buying the new Mac I was willing to try anything.
Since doing it the damn machine hasn't had a single KP. (Color me shocked. SMH)